I do think that maybe, even subconsciously, a lot of parents in the West are wondering, have we gone too far in the direction of coddling and protecting - you know, you see kids, sometimes that seem very rude and disrespectful. And the more important thing is they don't seem that happy.

I am definitely a Type A personality, always rushing around, trying to do too much, not good at just lying on the beach. But I'm so thankful for everything I have: wonderfully supportive parents and sisters, the best husband in the world, terrific students I love teaching and hanging out with, and above all, my two amazing daughters.

I'm a slave to my dogs and go out with them almost every day. They are poorly behaved if they don't run. They really act up.

I worry that by losing my temper so much and being so harsh and yelling so much that, by example, I will have taught my daughters to be that way, and I'm now constantly telling them not to do that.

As a purely mathematical fact, people who sleep less live more.

Real self-esteem has to be earned. I also believe in virtuous circles, like, nothing is fun until you are good at it. It is great if you can instill in children the ability to not give up, to have a work ethic.

Once you get to the Enlightenment, the way that powers get to be hyperpowers isn't just by conquest. It's through commerce and innovation. Societies like the Dutch Republic and the United States used tolerance to become a magnet for enterprising immigrants.